Power scraping machine



March 25, 1930. A. H. ENDORF POWER SCRAPING MACHINE Filed Sept. 14, 1928 2 Sheets-Sheet 1 0L N 6 INVE TOR.

MOM? M ATTORNEY March 25, 1930. 1 ENDORF 1,752,156

' POWER SCRAPING MACHINE Filed Sept. 14, 1928 2 Sheets-Slfieet 2 7Y4 ZVLVENTO fig ATTORNEY I Patented Mar. 25, 1930 ALFRED H. nnnonr, on wnmrnann, IOWA rowan scRAPm-e ivraenmn;

Application filed September 14, 192s. Serial in. aoaova My invention has reference to a scraping machine, and is more specially designed for use in removing the accumulation of foreign It is usual to matter 011 butchers blocks. 6 clean the blocks at the close of each days business, and this is done by scraping the surface of the block with a large knife or cleaver.

This is not only a very laborious operation,

but it results in the surface of the block being worn unevenly, so that in time it has to be reshaped, by cutting off a portion of the block.

By the use of the present invention it is possible to thoroughly clean the surface of the block without any abrading efiect there on. The machine is power driven, and the work can be performed quickly, and with a minimum of labor. The accumulation of matter which is removed from the block is" collected in the machine in such a mannerthat it can be easily removed therefrom.

The particular construction, arrangement, and manner of operation of the machine will more fully appear from the following speci- 2 fication, reference being had to the accompanying drawings, in which Fig. 1 shows the invention in side elevation.

Fig. 2 is a longitudinal section throughthe same. i

Fig. 3 is a cross-section onthe 3-3 of Fig. 1. i.

Fig. 4 is an enlarged detail of the scraper wheel.

The-reference number 1 indicates a box or casing, provided with a top 2, and supported on rollers 3, extending across the inner width of the box. At one end of the box is a hinged door 4, and the opposite endis open, except as it is closed by a panr5, slidable in the box,

and provided with a handle 6. The pan is fitted with a floor 7, extending a part of the length of the-box, and the upper part of the pan is projected to'the opposite end of the box from the end in which the pan is inserted, as at 8. By means of handles 9 fixed to the top 2 the machine can be run back and forth on, a butchers block or othersurface; i

. In the sidesof the box 1 are oppositely disposed openings 11, in which are vertically qof one'pair isatright angles with'that of "the next adj acent palr.

broken line movable boxes 12, in

mounted the ends of scrapers Mare secured which are. IOt-Eldiably a I shaft I4. Curved in sets or pairs in the centralsquared portion 16' of said shaft, the

ends of said. scrapers being provided. with straight edges 15. Thepairs of scrapers are preferably; formed integrally, the squared portion of the shaft being'formed offour similar strips connected with each other, and

between which the scrapers are secured. The

scrapers are also formed of spring metal, and are disposed so that the central portion On one end of the shaft 13 is a pulley 17,"

driven from anelec'tric motor 18 mounted-on the box 1, by means of a belt 19 passing round the pulley"17 and round a pulley 20 on the end of the drive-shaft of the motor, and also round an idler pulley 21 supported on the side of the 'box. Movement is imparted to shaft 13 to cause the scrapers 14: to rotate "in the direction indicated by the arrows, the "scrapers being held at aheight. suitable for cleaning the surface of the block The height of *the scrapers is capable of adj ns'tment, springs 23 being interposed between thelow'er 1 ends'of the openings ll'and' the boxes 12,

which' tendto move said boxes upwardly. Above the-box 1 is a cross-bar 24, in the ends or; which is fixed apair of rods 25, the lower endsof which are provided with plates 26 which bear against the upper ends of the boxes 12. Centrally of the bar 24 is a thumbscrew 27, rotatably mounted in an arch-plate 28, fixed to the top of the box 1, the ends of said arch-plate being free movement of the perforated to Permit rods 25 therein. -Be-- tween the ends of the cross-bar 24 and archplate 28 are coiled springs 29 which hold the? cross-bar and rods 25 position. By turning yieldably in a raised the screw 27 in the" proper direction thebar 24 is moved downwardly, also forcing the boxes 12 downwardly, and bringing the scrapers 14; into closet"- upon which it-is being used. By a reverse movement the boxes 12 I are permitted to rise again, and the scrapers are carried upward therewith.

proximity to the object To maintain the end s of the shaft- 13 at i uniform height coiled springs 30 are positioned in spaces 31 in the side walls of the box 1, the lower ends of said springs bearing against the plates 26. In operation, the machine is moved back and forth overthe block, with the motor in operation, and the scrapers in a position to clean the surface of the, block, without any effect upon the block itself. The material that is scraped from the block is thrown rearward ly and upwardly into the pan 5, from which it can be removed by taking the pan out of the machine. By opening the door 4 it is possible to get at the scrapers themselves in order to give attention thereto.

In order to work. effectively itis essential that the blades 14 shall have a considerable width in proportion to their length, the width thereof in a machine of moderate size being approximately two inches. This does better work in. removing theaccumulation from the block, and with less danger of injury to the block itself. The spring action of the scrapers also permits a flexible contact with the block, if any, withoutany abrasive action ,thereon.

Asthe machine is shoved backand forth .its position is frequently changed until the whole surface of the block has been cleaned. aojThe two rear rollers support the casing to such an extent that the forward roller can 7 be run off the edge of the block without interrupting the operation of the machine, .What I claim, and desire to secure by Letters Patent is: r j t I 7 A device of the class described, comprising a rollingly mounted casing open at the 'bottom, a container removably held in said casing, partially closing-the bottomthereof and K40 projected at its upper part from end to end of the'casing, a scraper rotatably mounted above the open, part of said casing, and formed of curved spring blades, means for adjustment of said scraper vertically, and

means for rotating said scraper.

V In testimony whereof I aflix my signature.

, ALFRED H.'ENDORF. 

